Improvement in penetrable couplings to permit the passage of ropes



hold-fast for crossing cables on cable-railways.

a attached wheels provided with notches and UNITED STATES PATENT VIDRUVIUS FRAZEE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE- HALF HIS RIGHT TO JAMES BAUMBERGER', OF SAME PLACE.

IMPROVEMENT lN PENETRABLE COUPLINGS T0 PERMIT THE PASSAGE OF ROPES, 81c.

Specification forming part of Letters Patent No. 219,153, dated September 2, 1879; application filed April 10', 1879.

To all whom it may concern:

Beit known that I, VITRUVIUs FRAZEE, of the city and county of San Francisco, and State of California, have invented a new and useful device, of whichthe following is a specification.

The inventionrelates to a device by means of which a rope, bar, or other similar impediment may be crossed at right angles, such rope or bar passing entirely through the device without releasing the constant attachments which hold the several parts of the device firmly together.

The object of the invention is to furnish a means by which various parts of machinery partly obstructed by bars, &c., may be readily reached, for which purpose it may be applied to wrenches, oil-cans, levers, and other like articles. It may also be applied in many cases to purchase and other blocks, so that the bights of long ropes can be readily inserted. There are many other purposes to which the device may be applied, among which may be mentioned that of a constant My invention consists of two stocks or holdfasts, held at some certain distance apart when in service by two or more constantlyfianges, and so arranged as to admit of a thorough passage of a rope, bar, or other suitable body between thestocks.

In the accompanying drawings, Figure l is a side view of the stocks A and B as held in position by the wheels H. Fig. 2 is a section, (0 D, Fig. 1,) showing a single-flanged wheel. Fig. 3 is a view of the device with one side of each stock removed. Fig. 4. is a full section, (E F, Fig. 3,) showing adouble-fianged wheel; and Fig. 5 is a section of the device as arranged with single-flanged wheels in pairs.

The device may be constructed with any number of wheels, but generally two single or two pairs of wheels will be found preferable, with an arrangement in either case similar to that shown at Fig. 1; or in some cases where used in pairs the wheels might be left uncovered, as shown by the section at Fig. 5.. In

I. It is also provided with journals J, Figs.

2 and 5, or else with journal-boxes K, Fig. 4, for supporting the wheels H.

The tail-stock B is provided with channels L, which receive the flanges M of the wheels H for maintaining the tail-stock firmly in position. In certain cases a double row of friction-pulleys may be substituted for the sides of the channels L.

The operation of the device is as follows; \Vheu crossing a bar, N, thehead-stock A passes on one side, while the tail-stock B passes on the other, Fig. 1. The bar N enters anotch, O, of a wheel, H,and turns the wheel, Fig. 3, finally leaving it in a position similar to its original one, in which position itis held by the spring I. The sameprocess is repeated with the next wheel, after which, it there are no more wheels, the bar passes through the passage .1 Q.

I claim as my inventionl. The head-stock A, attached to the axes of the wheels Hor their equivalent, and forming one side of the thorough passage P Q, in combination with the tail-stock B, substantially as set forth and described.

2. The tail-stock B, attached to the flanges M of the wheels H, or their equivalent, and forming one side of the passage P Q, opposite the head-stock A, in combination with the head-stock A, substantially as set forth.

3. The wheels H, provided with the notches and flanges M, and attached by their axes and flanges, respectively, to the stocks A and B, in combination with the spring I and thorough passage P Q, substantially as set forth.

VITRUVIUS FRAZEE.

Witnesses:

Jmvrns BAUMBERGER, JOHN J. ToBIN.

FFICE. 

